Self-flushing atomizing nozzle



THOMAS CHESTER WM- MACM/CHAEL INVENTORS A TTORNE Y.

M T. CHESTER ET AL SELF FLUSHING ATOMIZING NOZZLE Filed Sept. 29, 1924Patented May 17, 1927.

UNITED STATES PATENT THOMAS CHESTER, OF DETROIT, MIdI-IIGAN, AND WILLIAMMACMICHAEL, 0F WADS-' 1 WORTH, OHIO.

sELF-rLUsHInG A'roMiZIivG nozzLE. 1

Application filed September 29, 1924. Serial no. 7401;18.

one application of the invention is an atom izing nozzle such as may beused in air conditioning apparatus. where 1t is customary to arrangewithin an air chamberor.pas-' sage a large number of such nozzlesthreaded into and fed by risers which, in turn, are supplied from commonsource under pressure, with the fluid to be atomized within the chamber.A ditllculty encountered in such use is the frequent clogging of theatomizing nozzles with deposits, sediment or particles of foreign solidswhich in many cases are unavoidable owing to the nature of the liquidsdesired or necessarily used. More over it is often necessary that theprocess of aton'iizing be maintained as a continuous one, andinterruptions required for the individual removal, hand cleaning, andreplacing of a large numberof nozzles would be highly undesirable.

It is the object of the present invention to obviate these difficulties,by providing a means for multiple flushing of the nozzles, which isattained by the employment of nozzles of a self-flushing construction.

Referring now to the drawings:

Fig. l is a longitudinal section on the center line of the atomizer,showing its component parts in normal operative atomizing relation.

F 2 is a transverse section of the atomizer along line IIII of Fig. 1.

Fig. 3 is a transverse sectionof the atomizer along line IHHI of Fig. 1.

The atomizer body consists of the inlet member 1 to which is secured theoutlet member 2 by threading as shown. The outlet member 2 contains alongitudinal, cylindrical bore 11, terminatingin the orifice 9 to formthe nozzle 8. Extending within this orifice is a diffuser comprising thedeflector head 8, adjustably positioned upon the threaded spindle orstem at, and fixedly secured thereon by the lock nut 6. The deflectorhead is provided with the guide vanes or fins 10, which serve toposition it centrally of the bore 11. but allowing free longitudinalmovement therein; and similarly the guide vanes or fins 7, integral withthe deflector spindle, moving in the corresponding cylindrical bore 12,transversely position the opposite end of the spindle. The deflectorhead 3 which is provided'with an anticlastic surface, such as thepseudosph'eii cal surface indicated in 1, thus variably positionedwithin the orifice 9 restricts the effective outlet of the atomizer toan annular area of the constant outside diameter 9, but of varying innerdiameter depending upon the relative longitudinal position of thedeflector head with respect to the outlet member 2. l

Secnred between a shoulder in the outlet member 2, and the guide vanes 7of the spindle 4. is a helical compression spring 5, which tends tomaintain the deflector head 3 in its innermost position, that is, seatedwithin the nozzle 8 and thus entirely closing the orifice 9. However,normally suflicient fluid pressure is maintained at the atomizer inletto cause the deflector head 3 to slightly rise from this seatnotwithstanding the resistance ofthe spring 5, and a fine spray isproduced by the fluid which escapes at the outlet as it impinges uponthe deflector head and is thrown off radially thereby. In order that thespring be at all times positively positioned, it is made of a diameterto closely fit within the surrounding portion of the bore whichissufliciei'itly enlarged to provide a free passageway through thespring;

as indicated in the drawings an annular groove retains one end of thespring in position, the other end being positioned about shoulders cutupon the vanes.

W hen it is des red to flush the nozzle, it IS merely necessary totemporarily increase the fluid pressure at the intake of the atomizer.whereupon the increased force against the deflector head 3 overcomes thespring 5, causes the deflector head to rise from its normal atomizingposition, and thus temporarily greatly increases the effective outletarea of the nozzle; which thus frees any extraneous solid matter whichmight have interfered with the normal functioning of the atomizer, andcauses it to pass out through the orifice 9 with the flow of fluid'therethrough. When the entrance pressure is again reduced to normal thespring 5, because of the decreased counter pressure applied against thedeflector head 3, causes the deflector head to resume its normalatomizing position within the nozzle, and the atomizer to again functionproperly.

It is obvious that any number of these atomizers supplied from a commonfluid source may be thus simultaneously and almost instantaneouslyflushed by merely temporarily increasing the supply pressure at theircommon source.

lVhile we have specifically illustrated and described but one form ofour invention, We do not Wish the scope of our invention to beunderstood as limited thereto, but rather that it embrace any and allforms of construction embodying the fundamental substance of theinvention as set forth in the claims.

What we claim is:

1. In a fluid diffusing" device, an inlet member, an outlet memberdetachably secured to the inlet member, a dill'user coopcrating with theoutlet member to regulate the fluid egress, an annular recess Within theoutlet member, a guide member secured to the diffuser and co-acting withthe inlet member to maintain said diffuser centrally positioned withrespect to the outlet member,

and a spring between the guide member and the outletmember and seated inthe recess for yieldingly maintaining the difi'user against the outletmember.

Zln a fluid ditl'using device, an inlet member, an outlet memberdetachably secured to the inlet member, a ditluser cooperating with theoutlet member to regulate the fluid egress, an annular recess Within theoutlet member, a guide member secured to the dii'l'user and co-actingwith the inlet member to centrally position the diffuser with respect tosaid outlet member, and a' spring between the guide member and theoutlet connection and seated in the recess and adjacent to and supportedby the outlet connection for yieldingly maintaining the dii'luscragainst the outlet member.

Signed by us this Zith day of September.

THOMAS CHESTER-i WILLIAM MAQMIGHAEL.

